Radio tube socket



Aug. 28, 1928. 1,682,408

E. B. NOWOSIELSKI RADIO TUBE SOCKET Filed June 5, 1924 INVENTOR EDWARD B- Nowosmmm "aw/w;

ATTORNEY Patented Aug. 28, 19 28 UNITED STATES PATENT OFFICE. a

EDWARD B. NOWOSIELSKI, OF BLOOMFIELD, NEW JERSEY, ASSIGNOB T SPLITDORF ELECTRICAL COMPANY, OF NEWARK, NEW JERSEY.

RADIO TUBE SOCKET.

Application filed June 5,

This invention relates to a socket particu- I larly adapted for the reception of radio or audion tu es.

' 1 terminals and the terminals on'the tube.

' specification taken in connection with the annexed drawing; wherein Figure 1 is an end view of the socket looking at the tube entrance.

Figure 2 is a sectional view through the socket on the line 2/2 of Fig. 1.

Figure 3 is a perspective view of the mould ed socket before any of the spring contacts are mounted thereon.

Figure 4 is a perspective view of an auxiliary terminal contact.

In the drawing, 1 represents the body portion of the socket having a flange 2. The flange and body portion are moulded together from some suitable insulating material, which possesses high insulating qualities and con siderable strength. The flange 2 is provided with holes 3 and 4 for the purposes of mounting the socket on a panelboard 5, shown in dotted lines in Fig. 2. The ordinary audion tube has four contacts; two for the filament, one for the plate and one for the grid. Therefore, four spring contacts are provided onthe particular socket illustrated. These springs are preferably arcuately spaced 90 degrees apart. The flan e 2 is provided with grooves 6 for the reception of the outwardly turned ends of the spring members 7, the body portions of which springs extend longitudinally along the outer surface of the body of the socket and have their outer ends 8 bent inwardly. The ends 8 are disposed in slots 9, which act as guides for the ends 8 0f the contact springs 7. As will be seen in Fig. 1 these inwardly bent ends 8 extend toward the axial center of the socket where they are engaged by the terminals of the tube which is inserted from the open end of the socket, the tube being held in place by the clip 10, provided with a bayonet lock 11. The

1924. Serial No. 718,056.

clip 10 lies in a slot provided in thesocket and 18 held in position by any suitable means, such as a rivet or eyelet 12, passing radiall through a. portion of the flange 2. Inmould mg the socket, I prefer to provide, although this is not necessary, flat portions bounded by the dotted lines 13 (see Fig. 3), extending from the groove 6 to the slots 9. On

these flat portions the springs 7 are normally.

seated. In fastening the springs 7 to the flange 2 of the socket, I prefer to utilize auxiliary terminal contacts 14,. which are preferably placed over the spring contacts 7 and are fastened to the flange by screws, rivets or eyelets 15, which pass through the flange, the outwardly bent ends of springs 7 and the auxiliary terminals 14, and then being spun over as indicated in Fig. 2.

After the socket has been mounted on the panel-board 5, one end of theauxiliary contact members may be bent up as indicated at 16 for the purpose of soldering conductors thereto, or the ends 14 may be bent outwardly away from the panelboard 5 and wires connected to these ends. It is understood that these auxiliary contact members are preferably of soft drawn material so that they may 7 ,be readily bent as above described. i

From what has been said it will be clearly seen that the spring members 7 have their fulcrum point at the flange 2, thus providing a very resilient spring action, and on account of the bent ends 8 a relatively heavy wiping contact is provided at the terminals of the tube, which engage said spring ends- By providing a socket of material that is not subject to changes in weather conditions as well as temperature, the spring contacts will remain in a contlnuous condition of operation.

Vhile I have shown a preferred form of construction, it will be apparent that my invention is suceptible to certain changes without departing from the spirit of the same and the scopeof the appended claims.

Having thus described my invention, what I claim is:

1. In a device of the class .described, a

socket of insulating material having a flange with mounting holes therein, said socket having spring mounting surfaces circumferentially spaced on its outer surface, said mounting surfaces terminating in slots through the wall of the socket, contact springs lying on said surfaces and each having one end bent outwardly and having an eyelet passing therethrough and through the flange and an auxiliary contact member riveted to each contact spring by said eyelets the other end of said contact sprin s being bent inwardly through said slots toward the axial center of the socket, and means carried by thesocket to hold a tube in contact with said inwardly bent contact ends.

2. In a device of the class described, a moulded insulating socket having a flange, a tube retaiuingclip lying in a groove at one end of the socket and fastened to the socket by means positioned in said flange, contact springs having their body portions normally resting on, the periphery of the socket and having ends bent outwardly and resting in grooves on one side of said flange and fastening means going through the flange and said outwardly bent spring ends, said springs 20 having inwardly bent ends passing through the wall of the socket toward the axial center 01": the socket for the purpose described.

3. In a device of the class described, a socket having a moiluiting flange an moulded of insulating material, said ilange having grooves on one side of the flange 90 degrees apart, contact springs having outwardly bent ends set in said grooves, auxiliary contact members positioned over each of said springs and an eyelet passing through said spring end and auxiliary contact and flange forthe purpose describmh said contact springs having inturned ends nearthe other endo'f the socket and extending toward the axial cententhereof, and a clip mounted on the inner surface of the socket at the opposite end from said spring ends for holding a tube in contact with said inturncd spring ends.

In testimony whereof, I atlix my signature.

EDWARD B. NOXVOS IELSKI. 

